Reactive formazan dyestuffs

Abstract

The present invention provides the reactive formazan dyestuffs of the following formula (I), ##STR1## wherein m, Y, R, X 1 , X 2 , and M are defined in this document. These kinds of dyestuffs have deep-dyeing ability, and they are suitable for dyeing and printing of materials containing either cellulose fibers, such as cotton, synthetic cotton, hemp, and synthetic hemp.

What is claimed is: 
     
       1. A reactive formazan dyestuff of the formula (I) ##STR46## wherein: m is 0 or 1; Y is --SO 2  CH 2  ═CH 2 , --SO 2  C 2  H 4  W, --NHCOCHTCH 2  T, or --NHCOCT═CH 2  ; W is --Cl, --Br, or --OSO 3  H; T is --OH, --Cl, --Br, or --OSO 3  H;   R is H or C 1-4  alkyl;   X 1  and X 2  each independent is --F, --Cl, --Br, or quaternary ammonium;   M is Cu or Ni;   D is ##STR47## wherein n is 0, 1 or 2; q and p each independent is integer from 0 to 4; R' is H or C 1-4  alkyl.   
     
     
       2. A reactive formazan dyestuff of claim 1, wherein Y is --SO 2  CH 2  ═CH 2  or --SO 2  C 2  H 4  W, and W is --Cl, --Br, or --OSO 3  H. 
     
     
       3. A reactive formazan dyestuff of claim 1, wherein Y is --SO 2  C 2  H 4  W, and W is --OSO 3  H. 
     
     
       4. A reactive formazan dyestuff of claim 1, wherein Y is --NHCOCHTCH 2  T or --NHCOCT═CH 2 , and T is --Cl, --Br, or --OSO 3  H. 
     
     
       5. A reactive formazan dyestuff of claim 1, wherein T is --Cl or --Br. 
     
     
       6. A reactive formazan dyestuff of claim 4, wherein T is --Cl or --Br. 
     
     
       7. A reactive formazan dyestuff of claim 1, wherein M is Cu. 
     
     
       8. A reactive formazan dyestuff of claim 1, wherein D is ##STR48## and n is 0, 1 or 2; q is integer from 0 to 4; R' is H or C 1-4  alkyl. 
     
     
       9. A reactive formazan dyestuff of claim 1, wherein D is   --HN--(CH.sub.2).sub.p --NH--     and p is integer from 0 to 4.   
     
     
       10. A reactive formazan dyestuff of claim 1, wherein X 1  and X 2  each independent is --F, or --Cl. 
     
     
       11. A reactive formazan dyestuff of claim 8, wherein n is 1 or 2; and q is 1.